Therapeutic lamp



Sept. 6 1927.

N. E. GooDRlcH THERAPEUTIG LAMP 2 sheets-sheet 1 File'ld July 29. 1925Jag.

Sept- 6 1927- N. E. GooDRlcH THERAPEUTI C LAMP 2 sheets-sheet 2 FiledJuly 29. 1925 Patented Sept. 6,1927.

` UNITED STATES PATENT OFFICE.

NOBBIS E. GfOODRICH, OF BATTLE CREEK, MICHIGAN, ASSIGNOR T0 SANITARIUMHOSPITAL EQUIPMENT COMPANY, 0F BATTLEPCREEK, MICHIGAN, A CCRPOBATION 0FMICHIGAN.

THERAPEUTIC LAMP.

\\, This invention relates to improvements in therapeutic apparatus, andmore particularly pertains to electric lamps extensively employed fortherapeutic purposes in physicians ofiices, hospitals, sanitariums, etc.

Electricv lamps for therapeutic purposes -are vcoming into extensive usefor the treatment of various infections, diseases and ailments, and Ihave found that with the use of a lamp of high wattage the curativeeffect of such devices may be greatly extended in range. There are,however, a number of attendant'disadvantages to be met in attempting toadapt the usual therapeutic lamp to a high-powered electric lamp. Thegreatest of these perhaps, is the confinement of the large amount ofheat generated by the lamp within the reflector with the result that thereflector becomes highly heated causing the cement securing the lampbase to the lamp neck to soften and loosen, increasing the liability tofire and physical injury.

Another disadvantage of an apparatus of this character when used with ahigh wattage electric lamp, is the diiiiculty of attain- ,ing therequisite proportion of heat and light rays. It is diicult, if notimpossible, to obtain the correct proportions of heat and light rays bythe ordinary means of adjusting the apparatus toward or from the part tobe treated. I have discovered that the several foregoing objections maybe entirely overcome and to that end have devised the novel inventionhereinafter described.

It is one object of my invention to provide an easily adjustablereflector and one which may be readily adapted for use in connectionwith the therapeutic lamp stand described and claimed in my copendingapplication, Sei'. N o. 43,109, iiled July 13, 1925.

Another object of the invention is to provide a reiector mechanismadaptable for use in connection with a high powered electric lamp suchas one of 1500 watts without the retention of the heat as in formerreflecting mechanisms for this purpose and a reiiector in which positiveventilation is provided for the inducement of thorough and rapidcirculation of air.

A. further object includes the provision of means whereby the currentsupplied to the lamp, and thus the effective light and heat rayprojection, may be regulated and controlled.

Application filed July 29, 1925. Serial N0. 46,750.

Still further objects and advantages of my invention should be readilyappreciated alter reading the following description and claims inconnection with the accompanying drawing in which:

Fig. l is a side elevation partly in section of therapeutic apparatusembodying the above noted features of my invention.

ldig. 2 is a top plan vieW of the reiector and Ventilating mechanismshown in Fig. 1.

Fig. 3 is a section taken on the line 3 3 of Fig. 2 showing an electriclamp situated in the reflector, and,

Fig. 4 is a diagrammatic view showing a circuit embodying part of theinvention.

In the drawing, 2 designates a base constituting a support for the lowerend of a lamp standard 3 upon which a ventilated rheostat element 4. anda bracket clamp generally designated 5 connected with a balanced raisingand lowering mechanism generally designated 6, may be mounted as moreparticularly described in the copending application to which referencehas been made above. The bracket clamp 5 supports a. lamp supportingtrunnion yoke 7 which in turn engages trunnions 8 and 9, which aresecured to the reiectori 11 by rivets or in any other suitable manner,whereby the reiiector may be swung in a vertical plane through an angleor approximately 90. 'lhe arms of the yoke 7 are adapted to bepositioned over trunnion spindles 12 and 13 as will be apparent fromFig. 3 and are preferably slightly recessed as at 14 to provide annularchambers about the spindles 12 and 13 for the reception of light springs15 cooperative with nuts 16 and washers 17 to frictionally retardmovement of the reflector 11 in a vertical plane whereby the reflectormay be positioned'as desired.

High-powered electric lamps 18 are usually provided with long necks orstems 19 for the purpose of preventing `heat generated by the iilamentthereof, from softening the ceinent by which the usual lamp base 21 issecured. However, when such lamps are placed in a closed reiiector, theheat generated by the filament is conducted and conveyed toward the basewith the result that the base cement often softens and allows the lampsto pull loose. It also often happens that an attendant or even thepatient is burned severelyl upon contact with the highly heated portionsof the reflector or they might be seriously shocked should the electricwires short-circuit with the lamp. In orde-r to overcome thesedisadvantages, I prefer to provide the reflector with a series ofventilating openings 22 located through the reflector walls to the rearof the focus of the reflector and with one or more heat and light rayreflectors or baffles 23 secured about the perimeter of a lamp receivingopeningcut in the rear of the reflector. In the present instance, thebafie 23 is of conical shape and is provided with outwardly flaredportions 24 whereby it may be secured to the perimeter of the opening tothe rear of the reflector and is truncated to provide an openingsuiiiciently large to receive andlie in contiguous Vrelation to theelectric lamp 18. The foradapted to aid in positioning .the lamp 184vand its stem 19 within the reflector since they y lie practically incontact relation to the bowl and neck thereof, and these baffles withtheir reflecting forward-bases, successfully reflect or deflect anylight rays and heat currents directed upwardly toward. the base 21 ofthe lamp, out through the Ventilating openings 22 and 26, or direct thelight rays outwardly to their proper and desired direction.

In operation, heat generated within the reflector proper, will rise andstrike the baffles -23 and pass outwardly through the several openings22 into the outer atmosphere and thus establish a positive circulationaround the lamp .and through the reflecs tor. In a similar manner also,light rays and heated gas generated between the'two baffles 23 and 28will be directed outwardly away fronthe base of the la-mp to the insidesurface of the cap 25 where theheated gases will be dissipated throughthe several ventilatin openings 26. The cap 25, of course, may e made ofany suitable heat insulating material or it may be made of metal sincethe radiation therefrom is sufficient to dissipate any heat absorbedthereby.l

The rheostat 4 may consist of a number of independent resistanceelements 29 and 3/14 suitably insulated and connectedbetween a line 32to a source of power and a line 33 connecting with a lamp socket in theusual manner. Any desirable switch mechanism 34 may be utilized forconnecting the resistance elements in series with the lamp line singlyor in multiple, or if desired, the resistance may be entirely cutout aswill be readily ap preciated from Fig. 4. With this arrange` menttogether with the adjustable stand mechanism, I am enabled to moreperfectly adjust the lamp to the proper distance from the patient toobtain the proper relative amounts and proportions of heat .and lightray projection. In other words, adjustment of the lamp to the variousneeds or demands spirit of the invention or sacrificing any of 'theadvantages thereof. Hence, I do not limit the invention to theparticular embodiment shown, but reserve all such variations,modifications and mechanical equivalents as fall within the spirit andpurview of the .appended claims.

I claim:

1. In a therapeutic lamp, a parabolic re-` flector, a Ventilating caphaving ventilation openings and a lamp socket therein behindA the focusof the reflector, a plurality of ventilating openings in the reflectorbehind the focus thereof, and av plurality of heat and light raydeflectors adapted to deflect a por tion of the heat and light raysfalling behind the focus of the reflector, through said ventilationopenings.

2. In a therapeutic lamp, a parabolic reflector having oppositelydisposed trunnions for swinging movement thereon, a lamp socketconnected to said reflector to dispose a lamp within said reflector,said d eector having ventilation openings therein, and means forYreflecting light and deflecting heat rays away from said socket andtowards said openings.

3. In a therapeutic lamp, a parabolic reflector, a ventilator cap memberhaving ventilating opening therein and forming a lamp, socket engagingmeans, av lamp socket in said means, and meanswith said cap fordeflecting heat away from said socket toward said openings.

4. In a therapeutic lamp, a reflector hav,

ing ventilation openings therein, means for ositioning and securing asource of light in ront of the reflector, and means positioned betweensaid reflector and said. first named means for deflecting light and heatrays away from the first said means toward said openings.

5. In a therapeutic lamp, a parabolic reiiector, a Ventilating caphaving Ventilating openings therein, secured to said reflector, andhaving a lamp socket therein on the longitudinal axis of said reflector,and a CII light and heat ray deflector having an open- 4 ing thereinconcentric with said'socket secured to said reflector and projectingforwardly therein for intimate association with a lamp in said socket.

6. In a therapeutic lamp, a parabolic reflector having a portion to therear of its focus turned inwardly and formed with an opening thereinwhereby the neck of an electric lamp may be passed therethrough todispose the bowl of the lamp within the reflector, said reflector havingventilation openings adjacent said inturned portion whereby heatgenerated by a lamp may be dissipated without the reflector, saidportion serving as a deflector of heat and light rays directed towardthe base of a lamp.

7. In a therapeutic lamp, a parabolic refleotor` having a portion to therear of its focus indented and provided with an electric lamp neckreceiving opening, and an insulating covering for the rearward surfaceof said indented portion.

8. In a therapeutic lamp, a parabolic reflector having an inwardlyprojecting truncated-cone baille to the rear of the focus of thereflector, and a reflecting surface on the face of the baille interiorof the reflector.

9. In a therapeutic lamp, a parabolic reflector having an inwardlydirected conical baille, projecting through a wall thereof,

Said baille being truncated t0 provide an i electric lamp receivingopening therethrough, and a reflecting surface on the side of saidbaille facing the interior surface of said reflector.

10. In a therapeutic lamp, a parabolic reflector, an inwardly directedhollow conical baille connected at its base to said reflector to therear of the focus thereof, a reflecting surface on one side of saidbaille, andan insulation covering on the other side of said baille.

11k. In a therapeutic lamp, a parabolic reflector having a series ofinwardly directed conical baflles, said baflles being truncated toprovide aligned openings for the reception of the base and neck of anelectric lamp, and a reflecting surface on said baflles adapted toreflect light rays directed toward the base of the lamp outwardly andaway therefrom.

In witness of the foregoing I afllx my signature.

NORRIS E. GOODRICH.

